diff --git a/fs/iomap.c b/fs/iomap.c
index 77397b5..0d0bd88 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -1443,7 +1443,7 @@
 		const struct iomap_ops *ops)
 {
 	struct inode *inode = mapping->host;
-	loff_t pos = bno >> inode->i_blkbits;
+	loff_t pos = bno << inode->i_blkbits;
 	unsigned blocksize = i_blocksize(inode);
 
 	if (filemap_write_and_wait(mapping))